This week in BIM, 5 November 2026

This week: AI agents start editing BIM models from plain-language requests, a 40-storey tower streams into Unreal with every property set intact, and a BIM coordinator in Luxembourg shares the three checks that save more time than a week of clash resolution. Plus: why planning is still construction's biggest problem, and why so many workers are quitting.

Question of the week: what's the one check you always run on a model you receive, before anything else? Reply below. We'll collect the answers into a checklist on BIMpedia, with credit to everyone who contributes.

BIM and digital delivery

1. Qonic puts AI agents inside the BIM model

Qonic AI lets you work on a model by asking: isolate the furniture and colour it by level, find the windows with no fire rating and give them F60, make a concrete quantity report by building and concrete type, or even widen these windows by 0.5 m. The agents use the platform's own tools, only touch models you're allowed to edit, and every change can be undone like a manual one. Qonic also opened an MCP server, so you can plug in your own AI assistant and use it to query elements, calculate quantities or export IFC. It runs on tokens: paid plans include a monthly allowance, and free users can buy a pack from €50.
Why it matters: this is AI doing the tedious data work (finding gaps, filling properties, building reports) rather than drawing pretty pictures.
Read it on AEC Magazine · 5 Nov
Would you let an agent fill in missing fire ratings across a model? What would you want it to show you first?

2. Free "skills" that teach AI agents how a professional works

An AI agent connected to Revit has the tools but not the method. Autom8Labs released 22 free skills: step-by-step procedures, including how to check the result, that guide agents through tasks in Revit, AutoCAD, Navisworks, Civil 3D, Rhino, Grasshopper, MicroStation, 3ds Max and Advance Steel. Most are for Revit: family creation, scan-to-BIM, model health, MEP and coordination. Firms can also have skills written around their own templates, standards and sign-off checks.
Why it matters: the hard part of automation was never clicking buttons; it's knowing the right order and checking the outcome. Writing that down is exactly what good BIM standards do.
Read it on AEC Magazine · 3 Nov

3. Mach9 brings AI to aerial survey data

Mach9's web-based civil CAD tool now handles LiDAR and photogrammetry from drones, helicopters and aircraft, as well as mobile mapping. The AI extracts features, classifies points and builds surfaces as a first draft; surveyors check and edit it, then export DWG, DXF, SHP, GDB or LandXML for Civil 3D or OpenRoads. Two firms quoted in the article report around 40 % faster delivery and four to five hours saved per project.
Why it matters: existing-conditions data is usually the slowest input to a civil model. Background on our side: point clouds and scan-to-BIM and level of accuracy.
Read it on AEC Magazine · 4 Nov

4. "Why BIM still doesn't know what your building is made of"

Models coordinate geometry well, but material choices still live in specifications, spreadsheets, PDFs and manufacturer websites, and someone reconciles them by hand. Every mismatch becomes an error on site or a change order. Eduardo Souza argues for one structured record per product, linked to every schedule, spec and drawing that uses it, with environmental data (EPDs, HPDs) attached, while the architect keeps the final decision.
Why it matters: this is the gap between a model that looks complete and one that knows what it contains. Related: property sets and the buildingSMART Data Dictionary.
Read it on ArchDaily · 4 Nov
Where do material decisions live on your projects: in the model, in the spec, or in someone's inbox?

From the community

5. A 40-storey tower in Unreal, with its IFC data still attached (r/bim)

Getting a model into a game engine is easy; keeping its data attached is the part that breaks. u/Economy_Rate_9376 and a co-developer spent 16 months on it and open-sourced the result two weeks ago. The IFC is converted once (in your browser, so the model never leaves your machine) into That Open Company's Fragments format, then streamed into Unreal: you can cut the building by storey, filter by category and click any element to read its property sets. They're upfront about the limits: it's one way (IFC in, nothing written back), so it's for visualisation and simulation, not coordination.
Why it matters: a digital twin that doesn't know what its elements are isn't much of a twin.
Join the thread on r/bim · they're asking what features people need

6. The three checks that catch most bad IFC handovers (r/bim)

u/Bimsmarter coordinates projects in Luxembourg, where models change hands every week. Their three checks, none about geometry:

Are properties named the same on both sides? The same wall is FireRating, Fire Rating, feu or Pset_WallCommon.FireRating depending on who modelled it, so every filter downstream returns nothing. A shared property template fixes it, and almost nobody sends one.
Is the model really georeferenced? Survey point, project base point and a projected coordinate system on export. Otherwise two disciplines line up perfectly in their own files and sit 300 m apart on site.
Do levels, units and zones match? Millimetres against metres, N+0 against 00, zones by work package against zones by grid. The clash report then raises 400 issues that are really one line of setup.

Their verdict: one round of these checks before the first exchange saves more time than a week of clash resolution afterwards. On BIMpedia: model checking, georeferencing, and the free Model QA and Shared Parameters tools.
Join the thread on r/bim

7. Archeform IFC: a native Mac app to open, check and fix IFC (OSArch)

Aleš Zverina, an architect and engineer from the Czech Republic, is building a macOS IFC app with sections, measuring, quantities and schedules in the free version. The paid Pro version edits names, property sets, classification and status directly in the IFC, in bulk, and everything stays on your Mac. Release is planned for 13 November. He's looking for testers with real-world files (Apple silicon, macOS 26), and testers who send feedback get a year of Pro free.
See the post on the OSArch forum

8. How far are we from an open 2D + 3D BIM format? (r/bim)

Márcio (u/arqeco) points out that open-source BIM tools are appearing everywhere, but most share only 3D through IFC, while what a site actually uses is the drawings: sheets, annotation, tables. Is the open-source wave creating a new Babel of formats? There's no clear direction yet towards one open format that carries both.
Join the debate on r/bim
Do you still issue drawings as the contract, or has the model taken over on your projects?

Construction

9. "Why is planning still construction's biggest problem?"

Cost overruns of 30–80 % and delays of 20 months or more are still common on major projects, the authors write, and planning is one of the few drivers a team can actually control. Yet schedules are often built like 1990s critical-path networks on optimistic assumptions and treated as a contract document rather than a control system. They argue for "generative" scheduling that tests millions of sequences and resources, citing 10–20 % shorter programmes. Worth knowing: the authors are the founder of ALICE Technologies, which sells this kind of software, and McKinsey partners (McKinsey has an alliance with ALICE).
Read it on ENR · 5 Nov
Who owns the programme on your projects, and does anyone ever test it against the model? See 4D and 5D BIM.

10. About 190,000 US construction workers quit in September

The most in over three years, while open construction jobs rose to 298,000, up 45 % on a year earlier. Layoffs, by contrast, are at historic lows: contractors are holding on to the people they have. The data doesn't say why people leave; the economists quoted suggest other sectors, working conditions and immigration enforcement.
Read it on Construction Dive · 4 Nov

11. Open data standards reach the excavator

Liebherr adopted the MiC 4.0 communication standard on its Generation 8 wheeled excavators, so attachments such as tilt rotators exchange data in a common way, whoever made them. Same idea as openBIM: agree the language once and everything connects.
Read it on The Construction Index · 4 Nov

Watch

12. Why London's construction projects are so complex

A short from The B1M on what's under London's streets (tunnels, utilities, history) and why every project there starts with what you can't see. A good one to share with anyone who thinks coordination is just about clashes.
Watch on YouTube · 4 Nov

Your turn. Answer the question of the week, react to any item above, or share something we missed: a link, the author's name and one line on why it's worth reading. The best go into next week's roundup, with credit.

This roundup is put together every week from BIM and construction news, Reddit, OSArch and YouTube. Summaries are in our own words; follow the links for the full stories.